Jump to main content
Jump to site search


Star-shaped triazine-cored ladder-type ter(p-phenylene)s for high-performance multiphoton absorption and amplified spontaneous blue emission

Author affiliations

Abstract

Lacking high-performance blue emissive multiphoton absorption (MPA) materials particularly for frequency up-converted amplified spontaneous emission (ASE) or lasing hampers novel breakthroughs in a wide-range of laser-based applications. Besides, it is fundamentally challenging to develop highly efficient organic multiphoton-pumped ASE or lasing materials because of intrinsically weak MPA responses restricted by limited and inefficient intramolecular π-electron delocalization. Despite such short π-conjugated ter(p-phenylene) backbones, newly developed star-shaped triazine-cored ladder-type ter(p-phenylene)s exhibit not only remarkably strong multiphoton (from two- to five-photon) induced photoluminescence but also highly efficient MPA properties including a record high intrinsic 2PA cross-section of 5120 GM and outstandingly large intrinsic 3PA cross-section of 3.3 × 10−76 cm6 s2 at 1200 nm for a blue emissive fluorophore as well as highly efficient 2PA pumped blue ASE with efficiency up to ∼1.0%, in sharp contrast to triarylamine-based star-shaped analogues. As a result, TA(TL)-Ph(3)-CBZ is a highly efficient blue emissive MPA material for practical MPA applications. The synergy of the triazine core and the end-groups in this multidimensional structural framework proved indispensable to such a high-performance MPA response.

Graphical abstract: Star-shaped triazine-cored ladder-type ter(p-phenylene)s for high-performance multiphoton absorption and amplified spontaneous blue emission

Back to tab navigation

Supplementary files

Article information


Submitted
04 Nov 2019
Accepted
10 Dec 2019
First published
11 Dec 2019

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Star-shaped triazine-cored ladder-type ter(p-phenylene)s for high-performance multiphoton absorption and amplified spontaneous blue emission

L. Guo, X. Liu, T. Zhang, H. Luo, H. H. Fan and M. S. Wong, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC06025A

Social activity

Search articles by author

Spotlight

Advertisements